The lads and lassies at XDA-Developers made an intriguing discovery this week: a leaked 100MB file that might be the first Windows Phone 7 ROM actually destined for a device. What’s more, it could possibly reveal details about a phone we barely knew existed — the filename references an “HTC Mondrian.” At best, the contents might reveal wonders beyond imagination, including full specs, bundled apps, even the tools needed to properly shoehorn WP7 onto your existing HTC handset. At worst, the community might never open the blasted file, or discover it’s all a clever hoax. There’s really no indication either way, so we prefer to dream. If you think you’ve got what it takes, try cracking the ROM yourself (registration required) at our source link.