Was at Kimura a couple of days ago and was surprised to find out that Kimura-san has sold the business and will no longer be there as of May 1. He mentioned that the new owners will be maintaining the name and that he is currently looking at 3 other locations for a new restaurant but no decision has been made yet.
I've been to Kimura's on weeknights a couple of times this month (thanks to CH recs) and it was always bustling. According to the chef, the decision to sell was partly due to a number of breakins over the last month.
Its a shame but hopefully he'll open his new place soon enough!