It seems it was a bit too early to rejoice over the news that Google Play Books would allow uploading of books directly from Android devices. While the feature still works for EPUBs, a recent update to the app has removed support for uploading PDFs.
The change was made rather quietly and without warning. The only visible indication that such a change happened was that the word "PDF" was removed from the sentence describing the feature in the changelog. An APK teardown and code comparison also revealed how PDFs were removed from the supported file types.
This doesn't spell the end of the world, however. Those who want to upload their PDF documents to Google's cloud storage can still do so, but they'll have to once again resort to the web interface just like in the old days. A bit of an inconvenience for sure, but considering the new feature is just over a week old, it probably isn't ingrained in users' psyches yet.
What is somewhat more bothering is how Google just suddenly yanked out the feature with nary a word. Since it doesn't really break any important functionality, probably it was determined unnecessary. A Google contact mentioned that the PDF upload feature was experimental, which is why it was suddenly pulled. Somehow, we've heard that explanation before. A heads up would have been nice indeed, but unfortunately it's not how things usually roll.
VIA: Android Police