Having a Wikipedia entry altered is not generally news. With a site where the information is based solely on who was last as apposed to who is right, changes are a frequent occurrence. That is another reason that Wikipedia is not a reliable research source as mentioned in Berman Post: Stop Citing Wikipedia
What makes this alteration notable is the timing. Shortly before John McCain announced Sarah Palin as his running mate, about 30 alterations were made to portray her in a more favorable light. Who ever made the changes did so from an account that was created almost exclusively to make these changes.
There is no evidence that the McCain campaign was behind this, but safe money would say that they did. If so, it would show that the McCain campaign has become significantly more tech savy. Still no where near the level of the Obama campaign, but making strides in the right direction.
"Someone — and apparently it was just one person — felt like the existing biography wasn't appropriate for a vice-presidential candidate.
On Friday, 15 minutes before the rumor that John McCain had picked Palin as his running mate, a Wikipedia editor discovered 30 mostly favorable changes had been made to the Alaska governor's profile."