Hi Arun, I am also searching answer for same question. Any updates you have?
Hello..
Yes you can submit Express entry profile now (with spouse education secondary education or none) and later you can update after she got ECA. There will be improved score(Spouse education; Masters=10, Bachelor=8 points) after this changes.
Benefits:
# If there is any PNP announcement during this waiting period, you can grab this opportunity to apply. Otherwise you may have to miss it!
# If your score is the cutoff during draw. Earlier registered profile gets the priority to issue ITA.
cons:
# 1 year validity ends soon (it is not so important as you can create profile again)
In my opinion, you should submit EE ASAP after you received your ECA and IELTS results. Don't wait for your spouse ECA/IELTS. Later, it can be added.