HBO confirms new Game of Thrones prequel series in development including House of the Dragon and A Knight of the Seven Kingdoms

New Game of Thrones Prequels in Development: What HBO Has Confirmed So Far

Updated: December 2025 — Clarified confirmed projects versus speculation to reflect the current development landscape.

Game of Thrones fans have reason to rejoice. HBO is not just expanding the beloved Westeros universe — it’s locking in multiple new prequel series and reshaping how stories in the A Song of Ice and Fire world will be told for years to come. From confirmed spin-offs to tantalizing rumors of even more projects, here’s everything officially confirmed and worth knowing right now.

The Core Confirmed Prequels: House of the Dragon & A Knight of the Seven Kingdoms

HBO’s strategy centers around two major prequels that have already been firmly greenlit:

🔥 House of the Dragon

A dragon flies over Westeros representing the future of House of the Dragon on HBO
House of the Dragon continues the rise and fall of the Targaryen dynasty
  • Renewed for Season 4, slated for 2028.
  • Continues the Targaryen saga from Fire & Blood, exploring dynastic wars, dragons, and political warfare.
  • Season 3 is now expected to arrive in summer 2026.

⚔️ A Knight of the Seven Kingdoms

A hedge knight and his young squire journey through Westeros in A Knight of the Seven Kingdoms
A Knight of the Seven Kingdoms follows the adventures of Dunk and Egg across Westeros
  • Based on George R.R. Martin’s Tales of Dunk and Egg.
  • Premieres January 18, 2026 on HBO and HBO Max.
  • Already renewed for Season 2 (2027) before Season 1 has even aired — a significant vote of confidence from HBO.
  • Follows Ser Duncan “Dunk” and young Aegon “Egg” Targaryen on their journey across Westeros.

These two core series form the backbone of HBO’s prequel slate — one epic and political, the other intimate and adventurous.

What This Means for Fans (2026–2028)

Here’s the timeline of confirmed releases:

  • January 2026: A Knight of the Seven Kingdoms (Season 1)
  • Summer 2026: House of the Dragon (Season 3)
  • 2027: A Knight of the Seven Kingdoms (Season 2)
  • 2028: House of the Dragon (Season 4)

This rollout structure means Game of Thrones content will be a regular annual feature for viewers — something fans had long hoped for since the original series ended.

What Makes These Prequels Exciting

🐉 1. Expanding the Timeline

Timeline showing upcoming Game of Thrones prequel releases from 2026 to 2028
HBO plans new Game of Thrones prequel releases nearly every year through 2028

Instead of retreading familiar ground, HBO’s prequels explore:

  • The early rise of the Targaryens
  • Stories set nearly a century before the original Game of Thrones timeline
  • Fresh characters and unexplored politics of Westeros. Tom’s Guide

⚔️ 2. Different Storytelling Tones

While House of the Dragon leans into dynasty politics and dragon warfare, A Knight of the Seven Kingdoms brings a character-driven, knightly road-trip feel — a blend fans have never seen before in this universe.

3. Strong Source Material

Both series draw from rich lore:

  • House of the Dragon from Fire & Blood
  • A Knight of the Seven Kingdoms from the acclaimed Tales of Dunk and Egg novellas written by George R.R. Martin.

Beyond the Confirmed Shows: Rumors & Other Projects

HBO isn’t stopping with just these two.

Industry reports and creator insights have suggested that additional prequel concepts are in various stages of development. Among them:

  • A potential series focused on Aegon the Conqueror and the unification of Westeros
  • A fleshed-out adaptation of Nymeria and the Rhoynar
  • Animated tales and pilots exploring other regions of the world

However, many of these are still in early development or rumour stage — and haven’t been officially confirmed by HBO yet.

What Creators Are Saying

HBO executives have made it clear that expanding the Game of Thrones universe isn’t just a one-off plan.

While only a limited number of projects have moved beyond early development, HBO’s selective pace suggests a deliberate filtering process rather than hesitation. Each potential prequel is being evaluated not just on popularity, but on whether it adds a meaningful new perspective to the history of Westeros.

Why This Matters for the Future of Westeros

Unlike the original Game of Thrones run, which concluded in 2019, HBO’s current strategy promises:

  • New perspectives on known lore
  • Annual content drops across connected shows
  • A potential multi-series universe that evolves like comic book franchises but remains rooted in epic fantasy

For fans and casual viewers alike, this means the world of Westeros will continue to feel alive, relevant, and worth talking about for years to come.

Final Thoughts

HBO’s confirmed prequel lineup is both ambitious and thoughtful. By anchoring its strategy around two distinct but interconnected shows and continuing to explore new ideas, it’s clear the Game of Thrones universe is entering a new golden age—one that promises political intrigue, knights’ tales, dragons, and new legends.