It has been reported that BOS<->LAX will convert PS service as of October 29.
https://thepointsguy.com/news/united...ston-lie-flat/
However, the 752s revert to 738s on Feb 14th, 2019.
Deciding about a post-February booking. Should we be concerned this is just a trial of the lie-flats, or is UA committed to this for a reasonable period of time?