Most pilots are used to the Pilot Report (PIREP) intensity
reports for structural ice accumulation. Describing ice as "light,
moderate or severe" gives a good idea of whether a pilot may or
should venture into those conditions. But sometimes pilots want a
little more information about the ice's characteristics --
especially if flying an aircraft that can safely (and legally) plan
a flight into "known ice."
"Releasing the RFP in January is necessary to ensure all
parties, to include the Air Force, Congress, the Department of
Defense and any potential offerers have a chance to review the
updates to the draft and have open discussions."
Source: From a US Air Force release, commenting
on the USAF's decision to push back its request for bids
on a new tanker until the end of January. The change was made amid
concerns on Capitol Hill the bid contest isn't fair enough.