Yes, but not for long. The Ubuntu team has continued to recommend 32 bit, but they have announced that 64bit will be recommended as default starting with the next release (12.04).
IMO, this is well overdue, and the ubuntu devs have been far to hesitant to make 64 the default. They should have switched to listing both with equal prominence and suggesting that users choose based on their hardware a couple of years ago.
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