I have a CVS snapshot of 3.0.B4-dev installed. After reading an awaited announcement this morning I went to "Version Check" and followed instructions: downloaded phpBB-3.0.B4-dev_to_3.0.B4.zip, unpacked and placed the install directory to my root folder. After clicking on "Now start the update process..." link (https://olympus/install/index.php?mode=update&sid=74677f251be7d17df8cc396b65c3e6f3" target="_blank) I was redirected to standard announcement that I have to delete an install folder. Nothing was updated. When pointing manually to https://olympus/install/" target="_blank I saw an update tab (https://olympus/install/index.php?mode=update&language=en" target="_blank) but this link redirected to the same "delete install folder" information.