Speaking on the US PlayStation blog, James Stevenson - Insomniac's community relations manager - has promised that the developer's podcast on Thursday will include more details on Resistance 2. From here:
The next trailer and worldwide gameplay footage debut will be on the June 13th episode of Gametrailers TV with Geoff Keighley (it’s a full episode covering R2).In the meantime, check out the teaser, and don’t worry, you’ll be hearing more from us before June. Check out the April 17th Full Moon Show Podcast (www.insomniacgames.com) for more details about the teaser and about R2. And, if you have any questions, Bryan Intihar and I will be hanging out in the comments section tonight to answer them!
Resistance 2 was seen for the first time in a teaser movie over the weekend.