Given that the company has unilaterally degraded the terms and conditions in the last two years I'm not sure if what you are promised is worth anything. This is probably the worst thing the company has inflicted on itself in recent times. It used to be that whatever you were promised, however bad, was honoured. Now whatever they promise to attract new recruits has to be treated with some amount of scepticism.
Many people joined and have written contracts that speak of Loss of Licence, payment for medicals, rostered days for medicals, increment payments, uniform allowance, tea, coffee and water etc. All these things are no more. This is why the recent offer of a 5 -4 roster was treated with suspicion and ultimately rejected.
Go, see what you are offered but always consider what your move will be when the terms are altered without consultation or consent.