Apple said to expect the iPad Pro in November and it looks like we have a date for sales to begin. The large tablet looks appealing for productivity but a lack of trackpad or mouse support might limit some.
Apple's iPad Pro starts at $799 for the base unit with 32 GB storage while a 128 GB unit will cost $949. Both of those models rely on Wi-Fi for connectivity, while the latter model will also come with an LTE option for $1079.
Regardless of which iPad Pro you buy, none of them are bundled with the $169 Smart Keyboard or $99 Apple Pencil.
While I personally prefer the iOS apps that will appear on the iPad Pro -- which is large enough to effectively run two of them side-by-side -- the Surface Pro 4 may be better at meeting my meager computing needs; particularly for work.
Having a trackpad and mouse option on the Surface Pro 4 is a huge bonus since every article I write requires dozens of screen interactions for various drop-down menus, fields and such. I know the iPad Pro with a keyboard will let me write just as well, but reaching out to tap the screen that many times per article isn't appealing.