There are multiple combination possibilities. Best Buy seems to be discounting Sony soundbars with the purchase of a 4K TV. You can play around with the options but it seems the TVs are full price (however discounted per the latest B&H/Amazon prices) and the soundbars are ~$200 off. I haven't seen the ST5000 on sale.
TVs - 750D, 850D, Z9D (65/75), 930e/940e (55/65/75), 900e, 850e (65/75)
Soundbars - HTNT5 and HTST5000
This caught my attention as I've been eyeing a 930e and a ST5000. However I'm waiting for a (post CES, closer to SB) price point of $1,800 for the 930e (65") and want to try and get the ST5000 for ~$1000 (I know good luck...maybe eBay for the soundbar). This seems like a good opportunity to save $200 if you need a soundbar as these TVs are at relatively low prices (per other SD threads; however I still think/hope they'll drop closer to the SB).
I don't think this is YMMV but someone please correct me if I'm wrong. Please help clean this up...lot of info and not sure how to convey it succinctly.