We've known for quite some time that Motorola intended to push Ice Cream Sandwich to the Droid 4, but until now the waiting game continued, with no end in sight. It now appears that the smartphone maker is making serious progress on its own Motoblur-infused flavor of ICS, with a stock version of the upgrade making the rounds since last night. According to early adopters, the build seems to enable complete functionality, but upgrading early will leave your device locked to 4.0.4, with no option for future updates. So, for now, it makes sense to hang tight, but it'd be reasonable to assume that Moto-sanctioned ICS is indeed on its way to the Droid 4. Impatient owners will find everything they need at the source link after the break.