Mobile ad network Millennial Media is releasing its monthly data on mobile devices and OS marketshare for October today. Millennial, whose ads reach 63 million of a total of 77 million mobile web users in the U.S., or 81% of the U.S. mobile web; is reporting that Android is now tied with iOS as the largest Smartphone OS on
the network, with an 8% increase month-over-month and 37% impression share. Apples iOS also took a 37% impression share, and dropped from

Apple has announced that it will be launching its iAd mobile advertising network in Europe shortly, as expected. First up are the UK and France, which will be getting iAd this December, with Germany following next January.

Apple has also