A post on TheForce.Net said to be "straight from the E3 convention floor" offers what they are calling an announcement from LucasArts revealing plans for Jedi Knight II (thanks Shacknews), though we haven't yet seen an actual JK2 announcement or confirmation of this story. Here's their report:

BIG NEWS! LucasArts has announced "Star Wars, Jedi Outcast, Jedi Knight II". It's being developed with Raven Software on a modified Quake III engine. It's expected to be released next Spring.