This question is in 2 parts
1st Part
My internet connection is slow (5KBps) and I will download Lubuntu 14.04 on another fast internet connection from my dad's office. This week is full of holidays and the only working day is tomorrow (15-04-2014).
Lubuntu 14.04 will release on 17-04-2014 which is a holiday in Kerala, India. So, I would like to download 14.04 version tomorrow (15-04-2014).
So is the Lubuntu daily build of the date 15-04-2014 equals to the Lubuntu 14.04 version which releases on 17th April. Some little changes on the 16th April version to the 17th day official version is not important.
2nd Part
Also, If I download the .iso file of Lubuntu 15th April Version (using fast internet) and on 17th April using zsync, I download the latest version to the local file (15th April Lubuntu) on slow internet connection, Will the changes that would be downloaded be too sized or less sized ?