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(note: this is a temporary file, to be added-to by anybody, and moved to
release-notes at release time)
Transaction fee changes
=======================
This release automatically estimates how high a transaction fee (or how
high a priority) transactions require to be confirmed quickly. The default
settings will create transactions that confirm quickly; see the new
'txconfirmtarget' setting to control the tradeoff between fees and
confirmation times.
Prior releases used hard-coded fees (and priorities), and would
sometimes create transactions that took a very long time to confirm.
New Command Line Options
========================
-txconfirmtarget=n : create transactions that have enough fees (or priority)
so they are likely to confirm within n blocks (default: 1). This setting
is over-ridden by the -paytxfee option.
New RPC methods
===============
Fee/Priority estimation
-----------------------
estimatefee nblocks : Returns approximate fee-per-1,000-bytes needed for
a transaction to be confirmed within nblocks. Returns -1 if not enough
transactions have been observed to compute a good estimate.
estimatepriority nblocks : Returns approximate priority needed for
a zero-fee transaction to confirm within nblocks. Returns -1 if not
enough free transactions have been observed to compute a good
estimate.
Statistics used to estimate fees and priorities are saved in the
data directory in the 'fee_estimates.dat' file just before
program shutdown, and are read in at startup.
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