There is still no official announcement from Verizon to confirm the change. However, judging from the massive 4G LTE launch accompanied with a slew of upcoming LTE phones, it seems that many transformations are being discussed behind closed doors and this might be one of them. The lowered return policy comes amidst the launch of the Verizon iPhone 4, one of the most anticipated handsets so far.
Other carriers like AT&T and Sprint still have a 30 day return period. The return policy allows you to test the service before you sign a 2-year agreement.