Does QuickBooks Web Connector support create Bill Payments

We are integrating our SaaS with QuickBooks Desktop, but unfortunately unable to find enough info on qbXML. I remember it was there, but now looks like that Intuit obsoleted it.

• Does QuickBooks Web Connector support create Bill Payments?
• Is it now possible to find comprehensive info on qbXML?
• Is there any other modern ways (besides QBWC) to integrate SaaS with QuickBooks Desktop?

Yes, BillPaymentCheck or BillPaymentCreditCard.

See http://developer-static.intuit.com/qbsdk-current/common/newosr/index.html