[U-Boot] Wrong release date for v2015.10 on the denx.de

Hi Wolfgang,

By checking http://www.denx.de/wiki/U-Boot/ReleaseCycle, it says:

"Release "v2015.10" is scheduled in 66 days — on Aug 12, 2015."

This Aug 12 date is wrong. Could you please fix it?

Also I noticed that there is no statistics for v2015.07 release on this page. Is it coming?

Regards, Bin