It has now been confirmed that the greens on the Classic (Master 3) course at Almerimar are being renewed. Work started some time ago with the new grass being laid on the greens late in June. The two photos above are of the green of Classic hole 4 on Wednesday 27 June and Friday 29 June 2018. The day before and the day after the new grass was laid.
The video above has recently been released on youtube.
I believe that the aim is for the Classic course to reopen at the end of September 2018. I also understand that the long term plan is to replace the greens on the Master (1&2) course. I understand that further details about these plans will be firmed up and released to interested parties sometime later this year.