Several other boards I follow use this format... meh. Not horrible, but not a fan.
Software developers apparently just change stuff for the sake of changing it (and maybe to stay employed?), not because its BETTER. Like, why put the sidebar on the right instead of the left? Serves no practical purpose whatsoever, just makes me look in a different place than I'm used to. Same for the "my posts" option.
Now, if the 'Search' function works better, it'll make it all worthwhile because the old version was awful!