There aren't currently plans for it, I'd like to keep this strictly as a tool that prints out the information and not a file viewer if I can avoid it.
I find it's a lot easier to transfer the produced Available-Updates.txt to PC and open it there, but if you're wanting to view it on your Switch I recommend
vgedit.
i usually check the missing updates via tinfoil.
i tried this tool and it found i was missing more stuff , can't find any of the 'updates' mentioned below.
Kingdom Come: Deliverance - Royal Edition [0100650018FE1001][v0]
Kingdom Come: Deliverance - Royal Edition [0100650018FE1002][v0]
Kingdom Come: Deliverance - Royal Edition [0100650018FE1005][v0]
The Witcher 3: Wild Hunt [0100E67012925004][v0]
The Witcher 3: Wild Hunt [0100E67012925005][v0]
The Witcher 3: Wild Hunt [0100E67012925006][v0]
The Witcher 3: Wild Hunt [0100E67012925007][v0]
The Witcher 3: Wild Hunt [0100E67012925008][v0]
The Witcher 3: Wild Hunt [0100E67012925009][v0]
The Witcher 3: Wild Hunt [0100E6701292500A][v0]
Sid Meier's Civilization VI [010044500C183005][v655360] -> [v720896]
Sid Meier's Civilization VI [010044500C183006][v851968] -> [v917504]
Sid Meier's Civilization VI [010044500C183007][v851968] -> [v917504]
Sid Meier's Civilization VI [010044500C183008][v655360] -> [v720896]
Sid Meier's Civilization VI [010044500C183009][v851968] -> [v917504]
Sid Meier's Civilization VI [010044500C18300A][v786432] -> [v851968]
Sid Meier's Civilization VI [010044500C18300C][v655360] -> [v720896]