Retiring partner followup

Sir please check that is this correct about retiring partner:

Retiring partner is unlimitedly liable for decision taken uptill his retirement.
He will also be unlimitedly liable for decision taken after his retirement Unless he gives notification to 3rd party for his resignation.
However, if novation agreement is signed then retiring partner liability will be removed and new partner will be liable for the debt even though it was incurred before he became a partner.