It could be just an old build that's been renamed as Build 8250 but according to the Windows 8 Beta blog and a number of either sites, there's recently been some new screenshots of Build 8250. If they're from the same site, PCBeta (both the Download and screenshots originated from Chinese websites), then it could legit.

Sources:
Windows Store screenshots from Windows 8 build 8250 leaked | Windows 8 Beta
Windows Store screenshots from Windows 8 build 8250 leaked
New Windows 8 Store screenshots emerge - Neowin.net

Not that weird actually. To be honest, it's exactly the sort of filename you'd expect from a leaked build.

Well I am going to have a nosey will let you all know soon hopefully

Now I can take my Windows 8 system and throw it in the dumpster and not feel the least bit bad about it....most of it was dumpster bound anyway. However many people here are dual booting with very nice systems....With the beta (or whatever they call it this week) only a few days away, why risk your system on dodgy downloads? In something as big as a OS there is no limit to what could be hidden on there....

Originally Posted by Ivan the SoSo

Now I can take my Windows 8 system and throw it in the dumpster and not feel the least bit bad about it....most of it was dumpster bound anyway. However many people here are dual booting with very nice systems....With the beta (or whatever they call it this week) only a few days away, why risk your system on dodgy downloads? In something as big as a OS there is no limit to what could be hidden on there....

Yes, agreed, there's no need for unwanted guests in our systems.

If I isolate it in VMware and install to see if it is real or not, I am sure I will be fine. I was always the kinda kid that had to smell shake, feel and listen to presents days before opening them.