If you want a "better than nothing" workaround, then you'll have to go through troublesome steps by changing app region to USA, and then install Hotstar app. https://forum.lowyat.net/index.php?showtopi...ost&p=101240549
But there's many functionalities/features are not available in the Hotstar app, such as no Dolby 5.1 audio, no 4K UHD, cheap-looking UI design, can only watch movies and no TV series, and more.
If you personally don't demand much, then you may consider this quite troublesome workaround.

As of when would Samsung officially launches Disney+ Hotstar app in Malaysia, they did comment about this previously:
With no estimation timeframe given, you'll just have to expect for the worst, like might have to wait till end of this year, or next year, or never.