Is there an ETA for LibreOffice for Android?
By the time of LibreOffice 4.4 we should have a working and polished document viewer application ready.
2014-09-04: TDF blog entry seeking tender from 3rd parties to:
develop the base framework for an Android version of LibreOffice with basic editing capabilities to start work as soon as possible.
2014-09-11: Further blog entry by Andrzej Hunt showing rendering of Calc documents.
2015-01-22 FOSDEM presentation by Jacobo Aragunde Pérez (Igalia).
2015-01-27 First blog entry by Miklos Vajna (Collabora) on tiled editing required for Android operability. Also results for three of the four package tenders by TDF to develop LO on Android.
2015-02-04 FOSDEM presentation by Miklos Vajna (Collabora).
2015-02-09 Second blog entry by Miklos Vajna (Collabora) on tiled editing required for Android operability.
2015-02-27 Third blog entry by Miklos Vajna (Collabora) on tiled editing required for Android operability.
2015-03-05 Further blog entry by Jacobo Aragunde Pérez (Igalia) on cloud storage and email sharing for the LO Android app.
2015-03-17 Blog entry by Jacobo Aragunde Pérez (Igalia) on creating document providers.
2015-03-19 Fourth blog entry by Miklos Vajna (Collabora) on tiled editing required for Android operability.
2015-04-02 Fifth blog entry by Miklos Vajna (Collabora) on tiled editing required for Android operability.
EDIT 2016-02-15: Reformat post for greater clarity and fix a broken link.
2015-09-11 blog entry by Jacobo Aragunde Pérez (Igalia) on saving to the cloud and implementing support for a menu and the back button.
2015-09-25 blog entry by Miklos Vajna (Collabora) on LibreOffice Conference presentation of porting LO to Android.
2015-10-20 blog entry by Miklos Vajna (Collabora) on flat ODF support.
There are many problems associated with getting a desktop application the size of LO slimmed down to the point where it will run and be distributable (<50Mb) via Google Play.
EDIT 2016-02-15: Generally improve post and links.