I just read FAQ

"At an additional service fee of RM20 and a commitment of 12 months, customers can sign up for this new set-up and access to the HD service. New set-up installation fee will be waived in exchange for the existing box.
The high definition channels you receive through Astro B.yond are based on your current Astro (standard definition) packages.
For example
If you have the Sports Pack as part of your package, you will be able to watch Astro SuperSport HD and ESPN HD.
If you have the Sports and Movies Pack as part of your package, you will be able to watch Astro SuperSport HD, ESPN HD and HBO HD.
If you have the Sports, Movies and Documentary packages, you can enjoy all the 5 High-Definition channels, namely Astro SuperSport HD, ESPN HD, HBO HD, National Geographic Channel HD and HISTORY HD."

Tricky