According to Robotkingdom in HK, the reissue Astrotrain toy that was released in December last year (just 3 months ago) is being reissued in the next week or two.

I'm thinking that it is probably just another shipment of units of the same production run to HK, as it would be too soon for a reissue (another production run), particularly of an non-iconic character. With the amount of time it would take to do a production run and ship them out, it would be more than 3 months, so it could just be a 3 month delay due to Chinese New Year and Covid-19.