Dan Abrams, founder of the mediaite.com website network, had a lot of exciting news to share on Monday. For starters, he says he will be announcing in the next few weeks a new site to go along with the eight that already make up his group including gossipcop.com and stylite.com.

In addition, as part of some recent staff changes and promotions, Matt Wilstein is mediaite.com’s new LA bureau chief, effective January 7. Wilstein comes to the operation after launching the comedy-and-politics blog Gotcha Media in November 2008. He will among other things oversee expanded coverage of late night talk shows, just in time for Jimmy Kimmel‘s move tonight to 11:35 p.m.

Other staff changes at Abrams Media include: the addition of a pair of full-time writers to geekosystem.com (Steven Romano, Glen Tickle); the hiring of writer Colette McIntyre at thejanedough.com, where Sarah Devlin has also been promoted to the overseeing of day-to-day operations; and the addition there of regular contributor Meredith Lepore, formerly EIC of thegrindstone.com.

“Across the board, the teams we have in place today are as strong as any we have ever had and that provides me with confidence that this year will be even bigger and better than the last,” wrote Abrams on the same day that Buzzfeed LA bureau chief Richard Rushfield officially announced that site’s new Hollywood vertical. “A special thanks to all of the staff for the hard work, perseverance and smarts that has allowed us to reach this point!”