In conjuction of Doraemon's 40th Anniversary next year, DoraemonTheMovie's youtube channel had uploaded a special trailer for the next movie. It was revealed to be a new movie rendition rather than a remake one. Here's the link to the video, guys! https://youtu.be/EQRFDvJmxWY
Edit: After rewatching the special, it seems that they had refined the arts and designs on the characters to resemble 1979 AND also 2005 eras by which 2005 prevailed the most cause I can see that Nobita's hair and head took form of the 1979 era while the facial expressions remained pleasantly fabulous to resemble the 2005 era. ^^"