sorry Folks!It turns out that the Steel Panzer mod 1.5 release announced on Sukhoi.ru forum was in fact not the real release but rather some guys own compilation of all previous SF m Steel Panzer mods which he released yesterday as SP mod 1.5 without consulting anybody.
According to Stone 2009 who came out on the SF Graviteam forum to announce the error.The real Steel Panzer 1.5 mod in his own words:
Hallo everybody!
The official release of SPM 1.5 will take a place at the end of July.
Modification on a site Sukhoi is not SPM 1.5
I beg pardon for my English.
With kind regards.
It's just a matter of a coupel of weeks or so.
Cheers