They Think Its All Overtm
How many times do we have to repeat? We want , need (for payment channels), and require bigger blocks. Core has been discussing and planning for a HF block size increase for months. Our disagreements with Classic have to deal with the timing , and way it was being deployed... as of which the statement indicates both a support of segwit as the temporary capacity bump and--
If you have been following the conversations between the miners and developers "long enough deployment timelines" means 1 year. This statement indicates that the signers want to plan for and get ready for a goal for a future HF a year from now. They want come up with a rough plan immediately(3 weeks) so the HF does happen 1 year from now and doesn't get pushed off indefinitely.
The only businesses that matters which have signed this "consensus letter" are Bitfinex and Bitfury.