From the Sailfish dev mailing list, Soumya Bijal, Jolla product manager, gave us an hint on features for the forthcoming update 6 and 7. Please notice that the update 6, early expected for this week, has been shifted to the next one. The update 6 (expected for the forthcoming week) will bring:

• 4G support for users in Finland, Hong Kong and Estonia.
• New events view sub-page for displaying Facebook notifications.
• File picker and real tabs support in browser.
• Personalise shortcuts on lockscreen pull-down menu.
• Support for additional Bluetooth profiles: PBAP and HID.
• Support for traditional and simplified Chinese Handwriting Recognition in virtual keyboard.
• Quick access to Sailfish OS updates in Settings.

The update 7 expected for 7-14th June) will bring:

• LTE enabled for every country/operator which support 3 (1800Mhz),7 (2600Mhz) and 20 (800Mhz) bands.
• Folder support in app launcher area.
• Google contacts 2-way sync.
• Save unsent messages as drafts when messages app is pushed to background.
• Option to clear browser history only.
• Clean cookies from browser.
• “Do not track” option under Browser settings.
• Enable quick scrolling feature in Sailfish views.

Remember that this is just a part of the planned roadmap, including only high-level features and it’s subject to change. Furthermore, it doesn’t include any low-level update (packages, libraries, etc). Source