We have launched the Enveria project on Launchpad (https://launchpad.net/enveria). As many of you probably know, Launchpad -- like SourceForge -- is a free software hosting and development website, sponsored by Canonical Ltd.
There are no plans at this time to wind down our presence at SourceForge or anything, and in fact we link back to these pages from those over at Launchpad (for now). What you will probably find is that for our upcoming launch we will do so simultaneously on both sites.
I'm not sure that there is any benefit that the Enveria project will derive from being active on both sites at the same time -- assuming the the audience is more or less the same.
There are however different tools available on each, with some things better on one site than the other. We hope to take advantage of the strengths of both SourceForge and Launchpad for the betterment of the Enveria project.