Yeah, I'm kind of let down by this Ultimate release. I'll probably end up purchasing the 2020 4K releases instead at a much cheaper price as 90 minutes of new bonus material doesn't make up the difference in the pricing.
There is a new remastered Blu-ray set coming out for those movies and it's the extended version only.
The Lord of the Rings Motion Picture Trilogy: Remastered Extended Edition (Warner)
Middle Earth: 6-Film Ultimate Collector’s Edition (4K/UHD) (Warner)
Hell, you be better off just buying the earlier 4K set for the Lord of the Rings movies. According to Bill Hunt there is only about 90 minutes of new bonus material with this new 4K box set. I bet you can purchase that LOTR 4K set for less than $70 in the next few months.