During this morning’s keynote at PDC09 – Seesmic Founder Loic Le Meur joined Ray Ozzie on stage to make a very important announcement regarding the future of Seesmic. Seesmic focuses on bringing many of your favorite social networking services like Twitter and Facebook together into a single application so you don’t have to bounce between those services. They are best known for their Abobe AIR Twitter and Facebook app called Seesmic Desktop today.

While on stage with Ray, Loic announced the launch of Seesmic for Windows.

With the vast majority of Seesmic users coming from PCs running Windows, the move to the Windows Platform made sense. By moving development to focus primarily on the Windows Platform, it will allow Seesmic to focus on providing the best user experience to the majority of its users. This includes addressing issues with performance. Loic also announced that Seesmic for Windows will allow developer to write plug-ins that can run securely within the application.

As part of today’s announcement, Seesmic is releasing a Preview release of Seesmic for Windows. Seesmic for Windows is Seesmic’s brand new desktop client developed on the Windows Platform. They have been working aggressively to have this Preview release ready for you today.

Seesmic for Windows provides an excellent way to manage tweeting on Twitter. It helps you stay on top of what your friends are tweeting and what the latest trends on Twitter are.

Seesmic for Windows provides a “tabbed” UI (left-side of the app) that lets you filter your Twitter “stream” of tweets. You can filter by account as Seesmic for Windows supports having multiple Twitter accounts signed in, searches and Twitter’s latest new feature called lists. Everything can be filtered into specific columns. You can drag the columns into whatever position you like and scroll right to left to view your columns. And the new posting bar in Seesmic for Windows makes it easy to switch from one account to multiple accounts.

I’ve had the pleasure of using Seesmic for Windows for the last few weeks now and it works great! I’m currently managing 2 Twitter accounts, a few lists and use the Twitter Search capabilities track tweets on Windows 7, Windows Live, and more. I am very excited about what’s to come for Seesmic for Windows. You can expect to see Seesmic for Windows take advantage of the Windows Taskbar enhancements in Windows 7 and when Twitter adds support for dynamic location, it will use Windows 7’s Location and Sensor Platform!

Seesmic for Windows was released to all Team Seesmic members during the keynote this morning. If you are a Team Seesmic member, you should have an email from Loic in your inbox with a link to download Seesmic for Windows. If you’re not a Team Seesmic member, don’t worry. Join Team Seesmic to download the Seesmic for Windows Preview and receive the latest and greatest builds. You can also head on over to Seesmic.com right now and sign-up to receive Seesmic for Windows when it becomes available as well. Give Seesmic for Windows a spin and be sure to follow @windowsblog and @mswindows!

Loic also demonstrated Seesmic ported over into Silverlight and running as a Silverlight-based app. Seesmic is also excited about the possibilities Silverlight will provide in regards to eventually creating a cross platform application.

For more on today’s announcements from Day 1 of PDC09, click here. 

UPDATE: For more information on Seesmic’s announcements today including Seesmic for Windows, check out Loic Le Meur’s blog post!