It will do away with your bundling if you have top 250 bonus pack + hd pack and you go to HD + Platinum.  I know I did just that.  I  had classic silver dvr advantage pack + 3 premiums till yesterday.  The three premiums were Gold  HD /HBO/top 250 bonus pack all for 31.00. So this is way it was : 
57.99 Classic silver dvr advantge pack
 31.00 three premiums ( hd/hbo/top 250 bonus pk)
 07.00 additional receiver fee
---------------------------------------
95.99 
(03.00) dvr credit
(10.00) loyalty credit
------------------------------------
$ 82.99 before tax
 After I changed from GOLD HD to HD + platinum pack my bill  is now broke down to this: 
67.99 Classic Gold pack WITH dvr
 15.99 HBO
 10.00 HD + platinum pack
 07.00 additional receiver
--------------------------------------
100.98
(03.00) dvr credit
(10.00) loyalty discount
---------------------------------------
$87.98 before tax.
 So in the end I pay now $4.99 more than I did before I added the HD + plat pack.   DISH will no longer consider HD  or the top 250 bonus pack as a premium pack. ONLY the premium movie packs, Hbo/Showtime/Starz/Cinemax and Playboy and they will be bundled:
1 premium  15.99 hbo or 12.99 for Showtime,Starz or Cinemax.
2 premiums 22.00
3 premiums 31.00
4 premiums 40.00
5 premiums 50.00
		
		
	 
Same here. Just got off of chat and I had classic silver dvr advantage pack + 4 premiums 
The 4 premiums were Gold HD /SHO/top 250 bonus pack/Platinum all for 40.00. So this is how it was : 
 
57.99 Classic silver dvr advantge pack
 40.00 four premiums ( hd/sho/top 250 bonus/platinum pk)
 07.00 additional receiver fee
---------------------------------------
104.99 
(03.00) dvr credit
------------------------------------
$ 101.99 before tax
 
 After I changed from GOLD HD to HD + platinum pack my bill  is now broken down to this: 
 
67.99 Classic Gold pack WITH dvr
 12.99 SHO
 10.00 HD + platinum pack
 07.00 additional receiver
--------------------------------------
97.98
(03.00) dvr credit
---------------------------------------
$94.98 before tax.
So in my case, i get the same programming and i save $7.01 per month.
(Save 10.00 for platinum, pay 2.99 more for showtime)