The 2016 edition is close: 7-9 April @ Tobacco Docks, London.
The BAFTA Game Awards ceremony will be Thursday (tickets already sold out) but the Developer's Sessions (dev talks) are on Friday and (only one) Saturday.
A list of games (should get up to 150) and respective developers: https://www.egx.net/rezzed/2016/show-floor
Detailed list of dev talks:
QuoteFriday 8th April1pm: Dying Light. Pawel Rohleder, Director of Research & Technology Development at Techland, discusses how technology can affect the experience of gamers along with the pros and cons of developing and maintaining in-house tech at a dev studio.
2pm: Rock, Paper, Shotgun presents: Evolving CRPGs - Divinity: Original Sin 2. Swen Vincke, Creative Director & Founder of Larian Studios explains how the team plans to overcome the challenges of giving multiple players pen-&-paper like freedom in a story-driven RPG.
3pm: Rock, Paper, Shotgun presents: The Art of Firewatch. Artist Olly Moss and animator James Benson of Campo Santo and internet fame explain how they recreated the great American landscape of the Wyoming wilderness from their homes in England to support story and exploration in Firewatch.
4pm: Panel session: What Will VR Games Be Like? In a pivotal year for virtual reality our panel will discuss what they believe gamers can expect from upcoming VR games. The panellists are: Katie Goode from Triangular Pixels, George Kelion & Jackie Tetley from nDreams and Rebellion's Steve Bristow.
Saturday 9th April1pm: Rock, Paper, Shotgun presents: Sunless Sea Retrospective. Developer Liam McDonald and producer Lottie Bevan talk about 2015's Sunless Sea and present the latest version of Zubmariner, the upcoming expansion which takes your Captain under the Unterzee.