FileMaker has not announced when the next major version release for FM Cloud is. Until then the only ways to do PDF generation in WebDirect is via the robot method. Since FMCloud runs on cloud based linux, it's not included as part of the regular product line release cycle. It's also a very new product, so I doubt anyone official from FMI would guarantee that features in FMS are going to be available in FMCloud. Already CWP and scheduled scripts are not a part of FM Cloud.
FileMaker has been trending towards a yearly cycle for the main product line for over a few years now, so if they carry that cycle to the FMCloud product line, the next major version release would occur sometime around late September 2017. Any rollouts before then would likely be an incremental release with bug fixes and minor feature updates.
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