If you have a game shop around they should have some. You can also get the "official" screen on Amazon. Either way they cost more than they're worth in my opinion. You can make your own that will work just as well, out of cardboard, duct tape, and some printed-out information.
I haven't used the Storm Kings Thunder screen but its not the only one that isn't official. This is the official 5e screen: https://www.amazon.com/Dungeon-Masters-Screen-Accessory/dp/0786965630/ref=s9u_simh_gw_i1?_encoding=UTF8&fpl=fresh&pf_rd_m=ATVPDKIKX0DER&pf_rd_s=&pf_rd_r=KJKMT3EEXWTEB04HMNP7&pf_rd_t=36701&pf_rd_p=1cded295-23b4-40b1-8da6-7c1...
There is several examples in the DMG that I would write down or print as they are easy to forget. If you haven't bought the 5e DM screen yet and plan to use a screen, I would recommend this one. It does have some information on it that is facing you at all times that give you trap/danger values and how to roll certain things that are easy to forget. Its saved me from having to look up values. https://www.amazon.com/Dungeon-Masters-Screen-Accessory/dp/0786965630/ref=s9u_simh_gw_i17?_encoding=UTF8&fpl=fresh&pf_rd_m=ATVPDKIKX0DER&pf_rd_s=&pf_rd_r=P1XQ93X0KMV8094SRZQ4&pf_rd_t=36701&pf_rd_p=1cded295-23b4-40b1-8da6-7c...
Here you go.
IMO, just posting a capture onto reddit isn't the way to go. If you like 5e, you should show it by giving wizards money so that they will keep making 5e stuff.
Now, if you want to come up with your own "stuff happens" table, feel free to post it.
More tables are always nice.
I think that this is Matt's current screen, and that very much looks like the standard 5e screen behind it. It's clearly a little taller, with the metal strips along the top for magnets, but that should get you a very close starting point.
I just bought mine off Amazon
I think this is the one for 5E, the graphics look newer.
Hey this is a lot later lol but I found the old dm screen on Amazon used for like 20 bucks here's the link for the listings D&D Dungeon Master's Screen (D&D Accessory) https://www.amazon.com/dp/0786965630/ref=cm_sw_r_cp_apa_i_t6qnDb2T2G8YR
I like it!
There's also some nice printable ones here: https://www.reddit.com/r/DnD/comments/2j5qlg/final_version_of_my_5e_dm_screenplayer_cheat_sheet/
Or, I'd be willing to buy you one and send it to you. Unless you live someplace where shipping it would be insane.
Like the official one on Amazon.
Get a DM screen so your players cant see what you are doing (http://www.amazon.com/Dungeon-Masters-Screen-Accessory/dp/0786965630/ref=sr_1_1?ie=UTF8&qid=1430774563&sr=8-1&keywords=dm+screen). Also don't forget the snacks!