HD remakes don't really have any downsides- fairly low cost to produce and an existing fan base so chance of losing money is minimal.
Then youve got the benefit of introducing a new generation to it and potentially increase Shenmue 3 sales- yes they could get mauled critically but that wouldn't impact on S3 sales too much.
Then youve got the possibility of starting from the beginning and transferring your saves over which would be really good.
In regards to the original question I hope they make any announcements that they need to within a few days of the campaign closing and then go dark for a while- the important thing will be making the game the best it can be at that point.