Nokia's mission to reclaim smartphone competitiveness with its Windows Phone clan isn't over. We may have bemoaned the lack of data tethering in our Lumia 800 review, but it appears the Finnish phone titan has already announced that it will be coming to its Mango-flavored handsets. The apparent reason behind the inability of its flagship Windows Phone to share its data connectivity at launch was due to the FCC's stringent requirements. A Nokia spokesperson explained to WinRumors that Microsoft felt it was important to address "concerns raised by recent FCC regulations" before the feature was enabled, but that they're "optimistic" the convenient data-sharing function will arrive on Nokia's new smartphone through a software update. Dates, timelines and logistics (OTA? Link to Zune?) remain a mystery, but it would certainly make a merry present for anyone not dreaming of a white Christmas.