>>1767875>E7 rollout on Joetsu ShinkansenCompleting that rollout actually got delayed from the original planned 2020 timetable revision due to the flood in 2019 where 8 E7 and 2 W7 sets stationed in the Nagano Shinkansen Yard were flooded and got subsequently scrapped as a result. According to Rail Lab and Wikipedia it seems that JR East has just finished replacing the flooded sets at the end of last year too.
>23 N'EX trips start/end at Shinjuku instead of Ikebukuro/OmiyaOr more precisely N'EX will now end at Shinjuku (and the 2 roundtrips that start/end at Hachioji) so basically you have to transfer at Shinjuku if you want to go further along
For JR West it seems that they will replace the JNR Era 201 Series EMU with 221 Series EMU on Osaka Higashi Line, which is in-line to their plan to retire them by 2024. Looking at how JNR era trains are slowing getting phased out it is quite impressive that most of the KiHa 40 series DMU aren't in JR East and Central are still chugging along