Bedlam -- Here is the complete list from Randall. But these are all "options". The base camper itself has not changed.
• 3 different Off grid packages.
• lend a hand folding entry handle
• Nova Kool 12V 9.1 cubic ft refrigerator freezer
• deeper generator compartment ( to store portable Honda 2200)
• (qty 2) coax cables from service bay ( 1 to each TV) for portable sat dish
• (qty 2) 12 V charging stations ( one on each side of the bed
Nothing here would make a 2020 look any different your Mammoth. And there is nothing that does not entail additional cost. Most items I could do myself or pay someone less than the additional cost of the option, without throwing anything away, other than getting the updated refrigerator.
I think Randall created a great product, and it will continue to sell. But I think Host is adverse to change, whether due to their small size, the expense of change, or that they feel the product continues to be better than anyone else without change. But if you look at even the 2013 or 2014, there is really very little difference.
I may still buy a Mammoth, particularly if I do not care for the 2020 Eagle Cap. But likely it will be a 2018 if I can still find one. I noticed in an older post that you also waited for the next model year, and you ended up getting updated interior stains and fabrics. I am jealous. I wish Randall would give me something for waiting!